Twenty words are chosen randomly from a fifth-grade science book, and twenty random words are chosen from a ninth- science book. The length of the words chosen are as follows:
5th Grade Textbook: 2, 4, 3, 6, 5, 5, 3, 7, 8, 4, 4, 1, 5, 2, 4, 1, 1, 4, 5, 3
9th Grade Textbook: 7, 9, 3, 4, 12, 9,5, 3, 4, 3, 9, 4, 8, 6, 5, 7, 9, 4, 8, 6
The mean absolute deviation is 1.45 for the fifth-grade text and 2.25 for the ninth-grade text. Which conclusion is reason
these measures?
A)
Longer words are in the ninth-grade textbook.
B)
More common words are in the fifth-grade textbook.
Word length varies more in the ninth-grade textbook.